Enable bridge CNI plugin setting port-isolation [1] the interface.
When port-isolation is enabled, containers connected to the network
cannot communicate with each other over the linux-bridge.
Communication will be enable depending on the gateway appliance according
to its restrictions / policies.
For example: in a scenario the env connected to smart switch, enabling
port-isolation ensure traffic will go outbound, allowing the
smart-switch routing the traffic according to policies.
Add "portIsolation" flag to bridge plugin.
When true, configure the node interface with port-isolation [1].
Default is false.
[1] https://man7.org/linux/man-pages/man8/bridge.8.html (see "isolated" option)
Signed-off-by: Or Mergi <ormergi@redhat.com>
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